Glass-annealing furnace



A .wim-.r Smm v GLASSANEQAUNG FURNACE. ,APPLICATIG FILED MAY 15g 19k-9.

Patented June 1, 1929.-

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Fig. 1 and MAURICE A,'SMITH, OF JEANNETTE, PENNSYLVANIA, .ISSGrNlR T0 MCKEE GLASS COMPANY, OF JEANNETTE, PENNSYLVANIA,- A

CORPORATION 0F 'BENNSYLVANIA.

eines-Altrinerimel summon iaaesa Specification of Letters Patent.

rateateaaime i, ieee.

Application led May 15, 1919. Serial No. 297,282.

To all whom it may concern:

Be it known that I, MAURICE- A. Sivri'rri, a citizen of the United States, and resident of Jeannette, in the county of Westmoreland and State of Pennsylvania, have invented a new and useful Improvementin Glass-Annealing Furnaces; and I do hereby .declare the following to be a full, clear, and exact description thereof. V

My invention relates to a furnace for annealing articles of glass-ware, and relates more particularly toa stationary type of lehr or annealing furnace as distinguished from` the type Amost commonly used, where the glass-ware is deposited at one end of the furnace on an endless conveyer and passes to the other end where it is removed.

The object of my invention is to provide an annealingfurnace or lehr of this character which is' adapted for use with either producer gas or 'natural gas as a fuel, and at the same time a furnace which is economical in operation, such that a maximum amount of heat is obtained with a minimum consumption of gas.

To these ends my invention comprises the novel features hereinafter set forth and claimed.

In the accompanying drawings Figure 1 .is a sectional side elevation of my improved 2 is a section on the line 2-2 Fig. 3 is a section on the line -3-3 of Fig'. 1.

In the drawings the numeral 2 designates avsuitable base or foundation with the eX- cavation or pit 3 'for the lower part of the furnace, the floor line being indicated at 4. The side-walls 5 are built up from the bottom of the pit 3 and connected at the top by the roof 6,saidside and top walls being built of suitable refractory brick.

Vertical flues 7 are formed in the side furnace, Fig.

4 walls at suitable intervals, said flues communicating at the top where they enter the flue 8 communicating with the stack-flue 9.

`This stack-flue 9 is provided with a sliding damper-plate 10 for controlling the draft.

Arches 11 are thrown across from one side wall to the other', and said arches form the support for the bottom 12 of the annealing chamber 13.

Between the arches 11 are the checker workv chambers 1e, th. checker-work with the the construction being threu' the' cross-fines 15- which in turnv communicat with the vertical-fines 7. v

Gas-pipes 16 at the front of the furnace have the inwardly extending burners 17 at their lower ends which project into the bottom. of the furnace to deliver the gas which is ignited at that point when mixed with the air admitted around said burners. Valves 18 control the supply of gas .to the pipes 16 connected to the main supply-pipes 19. 'Gas-pipes 20 are also connected to the main-supply pipes 19 at the side of the furnace, and said pipes have l the inward-ly projecting burners 21 which deliver gas to the side openings 22. By this arrangement of the gas-pipes the gas is distributed evenly throughout the checker-work ychamlplers so as to give an even distribution of eat.

The annealing chamber 13 is closed at each .I

end by suitable doors When my improved furnace is' in use the glassware to be annealed is mounted. on a suitable truck or stand and introduced -into the annealing chamber 13 whereupon -the doors 23 are closed and the annealing be evenly and accurately controlled.'

'I The construction of my improved annealing furnace is suchv that either the producer gas or natural gas may be employed .without change of construction or rea-rrangement of the parts, and by the employ! ment of the checker-work chambers, the heat is stored up and greater heating efficiency is obtained so that a maximum amount of heat is had from a minimum consumption of gas.

What I claimis:

1. In a furnace for annealing articles of glassware, the combination of the sides and top,an annealing cham-ber inclosed there by, flues formed inthe sides and top around said chamber, a series of checker-work chamhers at the bottom of said furnace communioating with said fines, and. means for delivering air and gas to said oheckenworlr chambers, and a stack with which said fines communicate.

2. In a furnace for annealing articles of glassware, the combination of the sides and top, an annealing chamber inolosed thereby, iues formed n said sides anri top around said chamber, and checker-Work chambers at the bottom of said furnace cornmunoating with said 'ues, means for admitting gas at the front to supply Jehe for- Ward checker-'work chambers, and means for delivering gas at the side to the remaining checker-Work chambers.

3. In a furnace for anneaiing articles of glassware, the combination of the sides and anneahng ohaiinber formed Wihn said. sides and top, extending if in side izo sido, a botom for said annea .fig chamber supported en said arehes, nues top,

formed in' saidside Wallis between sailliarohes said fines communicating ai she 'atopT a stank communicating Wih sani ines, a

series of oheoirenwori: chambers the boh A. Sli/HTH, have he into set my mi.A

mail RICE A. vf'a Vvitnesses J. 15, Prnnm's GEO. i). Saran 

